Cisco Security has detected significant activity related to spam e-mail messages that claim to contain a Delta Airlines flight notification message for the recipient.? The text in the e-mail message attempts to convince the recipient to open the attachment to view and print the flight ticket.? However, the .zip attachment contains a malicious .exe file that, when executed, attempts to infect the system with malicious code.

E-mail messages that are related to this threat (RuleID4248,?RuleID4248KVR,RuleID4248KVR_1, and RuleID4248KVR_2) may contain any of the following files:

The Ticket_Delta_Air_Lines_#1634-45.exe file in the Ticket_Delta_Air_Lines_#1634-45.zip attachment has a file size of 48,128 bytes.? The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x184B9C669895883B845EC4D2D32519C9

The Ticket_Delta_Air_Lines.exe file in the Ticket_Delta_Air_Lines_#65363US.zip attachment has a file size of 48,128 bytes.? The MD5 checksum is the following string: 0xDE55F77F1C1DC2A21408CD42D098D6D7

A variant of the Ticket_Delta_Air_Lines.exe file in the Ticket_Delta_Air_Lines_#76786US.zip attachment has a file size of 48,640 bytes.? The MD5 checksum is the following string: 0x74666F64EEA78C4ED1667C5BF3F38B30

A variant of the Ticket_Delta_Air_Lines_#1634-45.exe file in the Ticket_Delta_Air_Lines_#1634-45.zip attachment has a file size of 48,128 bytes.? The MD5 checksum is the following string: 0x440A2A1436B0DDF116C283F8AD8A48D1

A third variant of the Ticket_Delta_Air_Lines.exe file in the Ticket_Delta_Air_Lines_#63224AR.zip attachment has a file size of 48,640 bytes.? The MD5 checksum is the following string: 0xF995C47DD0B0E7B7467D6285A71AC75E

The Ticket_Delta_Air_Lines_#482-134-45.exe file in the Ticket_Delta_Air_Lines_#482-134-45.zip attachment has a file size of 48,640 bytes.? The MD5 checksum is the following string: 0xC917A63F23CC6701486EE5619AE1A5F9

The Delta_Air_Lines_Ticket_DA45784.exe file in the Delta_Air_Lines_Ticket_DA45784.zip attachment has a file size of 30,720 bytes.? The MD5 checksum is the following string: 0x9002D8D5E88C7B85AC3A60116F3C6783

The following text is a sample of the e-mail message that is associated with this threat outbreak:

Cisco Security analysts examine real-world e-mail traffic data that is collected from over 100,000 contributing organizations worldwide. This data helps provide a range of information about and analysis of global e-mail security threats and trends. Cisco will continue to monitor this threat and automatically adapt IronPort systems to protect customers. This report will be updated if there are significant changes or if the risk to end users increases.

Cisco IronPort Virus Outbreak Filters protect customers during the critical period between the first exploit of a virus outbreak and the release of vendor antivirus signatures. E-mail that is managed by Cisco and end users who are protected by Cisco IronPort web security appliances will not be impacted by these attacks. Cisco IronPort appliances are automatically updated to prevent both spam e-mail and hostile web URLs from being passed to the end user.

The security vulnerability applies to the following combinations of products.

Primary Products:

IntelliShield

Threat Outbreak Alert

Original Release Base

Associated Products:

N/A

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